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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LTC1143CS датащи(PDF) 3 Page - Linear Technology |
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LTC1143CS датащи(HTML) 3 Page - Linear Technology |
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3 / 20 page  3 LTC1143/LTC1143L LTC1143L-ADJ ELECTRICAL CHARACTERISTICS TA = 25°C, VIN = 10V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS V1 to V16, Current Sense Threshold Voltage V8 to V9 LTC1143/LTC1143L V2 = V10 = 0V VSENSE – = VOUT + 100mV (Forced) 25 mV VSENSE – = VOUT – 100mV (Forced) q 130 150 170 mV LTC1143L-ADJ VSENSE – = 5V, VFB = VOUT/4 + 25mV (Forced) 25 mV VSENSE– = 5V, VFB = VOUT/4 – 25mV (Forced) q 130 150 170 mV V2, V10 Shutdown Pin Threshold 0.5 0.8 2 V LTC1143/LTC1143L I2, I10 Shutdown Pin Input Current 0V < VSHUTDOWN = < 8V, VIN3, VIN5 = 16V 1.2 5 µA LTC1143/LTC1143L I6, I14 CT Pin Discharge Current VOUT in Regulation, VSENSE- = VOUT 50 70 90 µA VOUT = 0V 2 10 µA tOFF Off-Time (Note 3) CT = 390pF, ILOAD = 700mA 4 5 6 µs tr, tf Driver Output Transition Times CL = 3000pF (Pins 4, 12), VIN = 6V 100 200 ns –40 °C ≤ TA ≤ 85°C (Note 4), VIN = 10V unless otherwise noted. V2, V10 Feedback Voltage (LTC1143L-ADJ) VIN = 9V 1.20 1.25 1.30 V VOUT Regulated Output Voltage VIN3, VIN5 = 9V LTC1143/LTC1143L 3.3V Output ILOAD = 700mA 3.17 3.33 3.43 V 5V Output ILOAD = 700mA 4.85 5.05 5.20 V I5, I13 Input DC Supply Current (Note 2) LTC1143: Normal Mode V2 = V10 = 0V, 4V < VIN < 12V 1.6 2.4 mA Sleep Mode V2 = V10 = 0V, 4V < VIN3 < 12V, 6V < VIN5 < 12V 160 260 µA Shutdown V2 = V10 = 2.1V, 4V < VIN < 12V 10 22 µA LTC1143L: Normal Mode V2 = V10 = 0V, 3.5V < VIN < 12V 1.6 2.4 mA Sleep Mode V2 = V10 = 0V, 3.5V < VIN3 < 12V, 6V < VIN5 < 12V 160 260 µA Shutdown V2 = V10 = 2.1V, 3.5V < VIN < 12V 10 22 µA LTC1143L-ADJ: Normal Mode 3.5V < VIN < 12V 1.6 2.4 mA Sleep Mode 3.5V < VIN < 12V, VOUT ≤ 3.3V 160 260 µA V1 to V16, Current Sense Threshold Voltage V8 to V9 LTC1143/LTC1143L V2 = V10 = 0V VSENSE – = VOUT + 100mV (Forced) 25 mV VSENSE – = VOUT – 100mV (Forced) 125 150 185 mV LTC1143L-ADJ VSENSE – = 5V, VFB = VOUT/4 + 25mV (Forced) 25 mV VSENSE– = 5V, VFB = VOUT/4 – 25mV (Forced) 125 150 185 mV V2, V10 Shutdown Pin Threshold 0.55 0.8 2 V LTC1143/LTC1143L The q denotes specifications which apply over the specified temperature range. Note 1: TJ is calculated from the ambient temperature TA and power dissipation PD according to the following formula: LTC1143 series: TJ = TA + (PD • 125°C/W) Note 2: This supply current is for one regulator block. Total supply current is the sum of Pin 5 and Pin 13 currents. Dynamic supply current is higher due to the gate charge being delivered at the switching frequency. See Applications Information. Note 3: In applications where RSENSE is placed at ground potential, the off-time increases approximately 40%. Note 4: The LTC1143 series is guaranteed to meet specified performance from 0 °C to 70°C and is designed, characterized and expected to meet these extended temperature limits, but is not tested at –40 °C to 85°C. |
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